关于胸锁乳突肌，说法不正确的是（）。

A.其浅面有颈外静脉斜行

B.其深面有颈动脉鞘

C.受副神经支配

D.受第2、3颈神经前支支配

E.两侧胸锁乳突肌同时收缩可使头低位

根据句意及首字母提示，在空白处填入适当的单词。

1. W________ is the post office? I can't find it. 　　

2. This hat is too big. Can you give me a s_________ one. 　　

3. The room in this hotel is very d_________. I want to change (换) a new one. 　　

4. Go d_________ the street, you will see the library on your left. 　　

5. T_________ is a clean park near our school.